deletions | additions       diff --git a/bibliography/maser_references.bib b/bibliography/maser_references.bib  index 8e43b4c..000de0e 100644  --- a/bibliography/maser_references.bib  +++ b/bibliography/maser_references.bib 
...
title = {{Narrow-line Seyfert 1 galaxies: an amasing class of {AGN}}},  journal = {Astronomy {\&} Astrophysics},  }  @article{Greenhill_2002,  doi = {10.1086/367602},  url = {http://dx.doi.org/10.1086/367602},  year = {2002},  month = {dec},  publisher = {{IOP} Publishing},  volume = {582},  number = {1},  pages = {L11--L14},  author = {L. J. Greenhill and P. T. Kondratko and J. E. J. Lovell and T. B. H. Kuiper and J. M. Moran and D. L. Jauncey and G. P. Baines},  title = {{The Discovery of H 2 O Maser Emission in Seven Active Galactic Nuclei and at High Velocities in the Circinus Galaxy}},  journal = {{ApJ}},  }